Cylinder safety-lock.



A. LECLERC.

CYLINDER SAFETY LOGK.v APPLICATION man mais. |914,

- 1,188,285. n n f PawntedJune2o,1916.

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IALIEIHEEIIZA)LEGIILIELELC, OF IIEARIIIS,y FRANCE.

' o YLInnER sinners-Look.

Speoijcatibn of Letters Batent.

Patented une 2Q, -1916.

{kpvliation al@ ensuit 13, 1*?.151- Serial N Ofwand "useful "Improvements in't Cylinder Safety-Locks, of "nieuwe @Home iis-,a specification.' ""2 l This invention relates to a safety look, the niechanism of which takes onlya'j nliiiiilHiuIOf I'TOOIH While ,haygihe maximum ,0f

The object of this invention is tvo provide a safety lock thelniechanisnifof ,whiclrifs inl the shape of a cylihdernotthicker than' the 'p y 'betweenrtln'sdisk andthe main body portion pipe df the Ordinary Safety' lOQkS," .the K11 vantage Abeing 'that nearly all'lthe partsof theinechanisinean 1befshap'e'd on the lfathe fand therefore, at' avery low cost-price.'

Another ,objeet'of the invention is to provide a. safety lock which "frolntleinside' of the door is actuated by 'lneals' of a knob 'and vtroni nthe outside by' nieans'ofa key.' The lock be 'coinbined' or'wn'otwith alarm bell. The accompanying drawing, given Joy way of example, shows one: forn of enibddinient of the'invention and in this' drawingz Figure is longitudinaliseetion yof lock; Fig'. Q'is a cross section of same. "Fig 3 is a i disassembled 'perspectivefview `of the` lock.

Y The safety lock comprises a cylindrical body 1 one of the'endsof which isprovided with an inner border'or an'ge`2. Theoutside of Athis body is screwfthreaded at 3 so as to be able to receive la tightening nut 4 upon which the two small posts 5' areinounb ed which are intendedto 'support a wheel cariyingrings 6 which bystriking against the bell 7 vserve to cause the bell 4vto ring" Thewheel carrying .the rings r(i is driven by a smallpinion which is rigidlysecured to theshaft 9 and meshes with the toothed wheel 10l whichin turn is rigidly connected with the actuating `knob of the lock lbolt and with a 'cylindrical ineinber 11 termed piston.k

The latter carries at one of itslends four pins 12 which are united at vtheiropposite end: by

nleans of a `disk 13 thus forming a small pinion `br lantern intended t`o inesh with tlieholtlli in which:l a toothed rack 15'h`as been'eut.' i

The gear lantern carries in its center two the ends 17 of which `are helm? righelsle '21113 are engaged in a glfpOye p,rovidedL the disk 13,` the' other 'ends being inserted in a hole 1S provided in n' piston which carries the lantern pinion is' provlded one'end with a disk 3, and

of' the piston, thereis 'further provided are- 'duced rl'jortio-n l'which forms in effect an annular groove, designated 20.1 A notch 21 is formed inI the edge of the' 23, the said notch VAbeing" forjthe purpose engaging a 1stop"'screyv22,which isheld in thecasing 1,

thereby preventing rotationfof thev piston and lantern pinion. A spring 24 is inclosed `withfiii'tlie casing 1, and bears with its ends of the casing andthe against ther'n d ijsiaee.

A 1he disk 13 is provided with an opening 25' corresponding to the bit 26 of .thekey ingafteifthe end 27 of'ft-he key hasshifted mme the Iiisk 13.

This s aj'etzyl"lock Works as follows: The

,keyliaving' been inserted into the key-hole'V '29 oilthe loek, the' lend y27l of the key vpushes ,thelba'r's k1'6"back,which take up the positions against the? tension of lthe" spring 24 until the pin 212 becornes seated intheannular groove F20; l Itwill be noted that theend of the key lis partly 'out away, as indicated at 27 this [results :in -sliding" one-.half of the bar 16 a the bars 16,the partQS of I)the-.bit remaining greater distance than the other half, thus throwing the fingers 17 of the bar 16, out of alinement with each other. These proj ections 17 extend through the spaces in the periphery of the lantern pinion, and when the key is rotated the lantern pinion is also rotated, and owing to the interengagement of the lantern pinion, bars, andthe rack teeth on the sliding bolt, the sliding bolt will be retracted or advanced, as the case may be. It will be further noted that the rack teeth of the sliding'bolt are further provided with a set of notches 31 which are adapted to receive the extremities 17 of the member 16. l/Vere these notches not provided, the lantern pinion could not be rotated because of the fact that the rack teeth could not enter the spaces in the lantern pinion at the points where the extremities 17 projected therethrough.

A by-pass 32 is formed between the rack teeth of the sliding bolt which is adapted to receive the disk 13 when said disk has been pushed in owing to the insertion of the key.

The lock may be actuated from vthe inside of the door without the use of a key by exerting a pull on the knob; this movement causes the tumbler to move to the left in Fig. 1, until the pin 22 is out of engagement with the knob 21. The pin 22 then being disposed within the groove 20, the knob may be rotated and the bolt 14 will be consequently rotated.

The lock bolt is held in position by a bridge 34 secured by means of screws 35.

Having now fully described my said invention, what I claim and desire to secure by Letters Patent, is:

1. In a lock of the kind described the combination with the tubular lock body of a lock bolt, means for guiding` the said lock bolt transversely with reference to the said tubular body, a toothed rack provided on the said lock-bolt, a spring controlled piston slidably and rotatably engaged in the said tubular body, a pinion on the said piston, a key adapted to shift and rotate the said piston in the said tubular body, spring controlled small bars axially and slidably mounted in said piston, arms formed at right angles at one end of said bars and adapted to form additional teeth of the said pinion and means provided on the key and adapted to shiftthe said small bars independently of the said piston so as to cause the said arms to coincide with said toothed rack of the lock bolt, substantially pinion, projections on the sliding ward which project through the periphery of the pinion, and a plurality of notches formed in the rack teeth of the sliding bolt which are adapted to receive the extremities of the sliding ward when the tumbler is rotated.

3. The combination with a lock casing, of a slidable and rotatable tumbler located therein, said tumbler being provided with an annular groove and a lantern pinion, a longitudinal notchin the periphery of the tumbler, a pin projecting within the casing adapted to engage the aforesaid notch, a sliding bolt provided with rack teeth for engagement with the lantern pinion, resilient means for urging the tumbler toward one end of the casing for the purpose of holding the pin engaged within the notch, andv means for permitting the insertion of a key whereby the tumbler may be slid until the pin is seated within the annular groove and whereby the tumbler may be rotated for the purpose of retracting or advancing the sliding bolt. v

4. The combination with a lock casing, of a rotatable and slidable tumbler located therein, said tumbler being provided with a lantern pinion and a recess which is adaptedto receive a sliding ward, said sliding ward being in the form of a rod which is longitudinally split to form two halves, the ends of the halves being bent outwardly and away from each other, resilient means for urging the sliding ward toward one end of the tumbler for the purpose of seating the extremities thereof in a pair of notches adapted to receive them and which are formed in the end of the lantern gear, said extremities being adapted to project between the teeth of the lantern pinion, a plurality of notches formed in the teeth of the sliding bolt which are adapted to receive the extremities of the ward during the operative position of the lock, and means whereby a key may be inserted for the purpose of forcing the sliding ward and its extremities into the path of movement of the rack teeth for the purpose of rotating the tumbler.

5. The combination with a lock casing, of a rotatable and slidable tumbler, a lantern pinion mounted on the tumbler, a sliding bolt provided with rack teeth which are adapted to engage the lantern pinion, a sliding ward centrally located within the tumbler, said ward being formed of two sliding bars having their ends bent outwardly and away from each other, said ends being further adapted to project between the teeth of the lantern pinion, one end of the lantern pinion being provided with notches which are adapted to receive the ends of the ward in one position thereof, resilient means for urging the ward forward for retaining the ends thereof within the notches, a key rack teeth of the sliding bolt to receive the 10 which is adapted to be inserted within the ends of the ward.

.tumbler for the purpose of engaging the In testimony whereof I have hereunto tumbler and to push the ward backward, set my hand in presence of two Witnesses.

means on the key for throwing the ends of the ward out of alinement with each other, ALFRED LECLERC' and means whereby thetumbler may be ro- Witnesses:

tated to retract or advance the sliding bolt, HANsoN C. CoXE,

and a plurality of notches formed in the EDWARD W. BIESEL.

Copies of this patent may be obtained for iive cents each', by addressing the Commissioner oi' Entente, Washington, 10. C." 

